Other versions exist on this site from various publications. This one is from the Radio Electronics Experimenter from 1990. The bargraph circuit uses the UAA170.
This circuit can reduce the voltage of a source by providing regulated adjustable output. The...
This stage of IF to 455 kHz operates with voltages from 1.5 V. We find it in a 90s Popular...
This trigger produces an output pulse when zeroing the input signal. The circuit is from a...